JB/T 7780.5-2008
Methods for measuring mechanical and physical properies of wires for rivet contacts.Part 5:Torsion test (English Version)

Standard No.

JB/T 7780.5-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

Professional Standard - Machinery

Latest

JB/T 7780.5-2008

Replace

JB/T 7780.5-1995

Scope

This part of JB/T 7780 specifies the torsion test method for wire rods used for rivet-type contacts. This section is suitable for testing the performance of rivet-type contact wires and other contact wires withstanding plastic deformation when torsion in one or alternating directions, and shows metal inhomogeneity, surface defects and some internal defects.

JB/T 7780.5-2008 history

• 2008 JB/T 7780.5-2008 Methods for measuring mechanical and physical properies of wires for rivet contacts.Part 5:Torsion test
• 1995 JB/T 7780.5-1995 Test methods for mechanical and physical properties of wire rods for rivet contacts Torsion test methods for wire rods for rivet contacts